JP3736391B2 - Target search device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a target retrieval apparatus.
[0002]
[Prior art]
As a conventional navigation device, for example, there is an in-vehicle navigation device disclosed in Japanese Patent Application Laid-Open No. 61-194473. In this in-vehicle navigation device, a map of an area desired by the user is displayed on the display device, and when the facility desired by the user is selected, the location of the facility existing on the map screen is displayed as a mark. In addition, in response to a user operation, a description of the facility displayed on the map screen is displayed. The user can set the destination based on the display and explanation of the facility on the map screen.
[0003]
[Problems to be solved by the invention]
For example, when a car on which a user rides travels according to route guidance to a preset destination using a navigation device, a request for meals, shopping, etc. occurs, and the user And immediately try to find the desired facility. In the conventional navigation device, when the genre of the facility desired by the user is selected from the menu display, the facility of the designated genre existing in the map displayed at that time is displayed on the map screen.
[0004]
However, the target such as the facility is searched based on the current position of the automobile. Therefore, when searching for a target that exists along a general road while a car is traveling on a highway, the target is searched based on the current location on the highway. Otherwise, the target cannot be reached, and the search results cannot be used effectively. In addition, if the car is traveling on an elevated road or tunnel, it will not be possible to change the course until it reaches the next intersection, so the search results can be used effectively. Can not do it. Furthermore, when the traveling speed of the automobile is high, it is not possible to change the course until the vehicle reaches the target without slowing down to some extent, so that the search result cannot be used effectively.
[0005]
The present invention solves the above-mentioned conventional problems, and even when the vehicle is traveling on a highway, even when traveling on a place where a course cannot be changed such as an elevated road or in a tunnel, the traveling speed is also high. An object of the present invention is to provide a target searching apparatus capable of effectively utilizing the result of searching for a target even when the price is high.
[0006]
[Means for Solving the Problems]
  Therefore, in the target object search apparatus of the present invention, there are provided means for storing information relating to a plurality of target objects, and a search reference position for searching for the target object.Depending on the driving situationMeans for determining, means for searching for the target with reference to the search reference position, and means for outputting information relating to the searched target.HighAn interchange that gets off from a highway to a general road is determined as the search reference position.
  In another target retrieval apparatus of the present invention, the traveling state is traveling on a highway.
[0007]
  In still another target object search device of the present invention, means for storing information relating to a plurality of target objects, and a search reference position for searching for the target objects are provided.Road typeAnd means for searching for the target with reference to the search reference position, and means for outputting information on the searched target.Depending on the road typeThe intersection ahead of the current position is determined as the search reference position..
[0008]
  In still another target object search device of the present invention, means for storing information on a plurality of target objects, means for determining a search reference position for searching for the target object according to a driving situation, and the search reference Means for searching for the target with reference to a position; and means for outputting information on the searched target.If you are traveling on an elevated road or tunnel,Ahead of the current positionintersectionIs determined as the search reference position.
[0009]
[Action]
As a result, when the vehicle is traveling on the expressway, the target is searched for using the interchange from the expressway to the general road as the search reference position, so that the search result can be used effectively.
[0010]
In addition, if the car is traveling on an elevated road, a tunnel, etc. where the course cannot be changed, the target is searched using the intersection ahead of the current position as the search reference position, so the search results can be used effectively. can do.
[0011]
Further, when the traveling speed of the automobile is high, the target is retrieved using the position ahead of the current position as the retrieval reference position according to the traveling speed, so that the retrieval result can be used effectively.
[0012]
【Example】
FIG. 1 shows an entire circuit of the navigation device. The central processing unit 1 performs operation control and calculation of the navigation device by the CPU 2. The ROMs 3 and 5 store system programs executed by the CPU 2 and various parameters. The RAM 4 stores data input from the outside, various parameters used for calculation, calculation results, and the like. The clock 6 generates time information. The sensor input interface 7 inputs detection data from the absolute azimuth sensor 21, the relative azimuth sensor 22, the distance sensor 23, and the acceleration sensor 24 of the current position detection device 20 and sends them to the CPU 2. The communication interface 8 transmits / receives various data to / from devices connected to the data bus 28.
[0013]
The image processor 9 reads the image data stored in the image memory 10 and outputs the image data to a display 33 that can display an image, such as a CRT, a liquid crystal display, or a plasma display. The image memory 10 stores image data displayed on the screen of the display 33, and transmits / receives image data to / from the image processor 9. The image processor 9 converts data such as targets and roads, which will be described later, into display data according to a command from the CPU 2, and forms image data to be displayed on the screen of the display 33. At this time, in order to scroll the screen, an image around the screen displayed on the display 33 is also formed and stored in the image memory 10. The speech processor 11 inputs the synthesized speech waveform data read from the ROMs 3 and 5 by the CPU 2 to form an analog waveform and sends it to the speaker 13.
[0014]
The current position detection device 20 is a device for obtaining data for detecting the current position of an automobile (hereinafter referred to as a host vehicle) equipped with a navigation device. The absolute azimuth sensor 21 is a geomagnetic sensor that detects, for example, geomagnetism and outputs data indicating the north-south direction as an absolute azimuth. The relative azimuth sensor 22 outputs data indicating a deviation of the traveling direction of the own vehicle with respect to the absolute azimuth detected by the absolute azimuth sensor 21, and detects, for example, a gyro apparatus such as a piezoelectric vibration gyro or a steering angle of a wheel. This is a steering angle sensor. The distance sensor 23 outputs data indicating the travel distance of the host vehicle, and is a digital counter linked to a travel distance meter, for example. The acceleration sensor 24 detects the acceleration of the host vehicle, and is, for example, a semiconductor acceleration sensor.
[0015]
The GPS receiver 25 receives a GPS (Global Positioning system) signal and outputs position data. The beacon receiving device 26 receives a beacon from an information providing system such as GPS correction data or VICS (road traffic information communication system), and outputs the received data. The data transmitter / receiver 27 transmits / receives current position information to / from the bidirectional current position information providing system.
[0016]
The data communication device 30 transmits and receives signals to and from road information systems such as VICS and ATIS (traffic information service). The data transmission / reception unit 31 is, for example, a VICS transmission / reception unit, and the telephone transmission unit 32 is, for example, an ATIS communication unit.
[0017]
A transparent touch panel 34 is provided on the screen of the display 33. This touch panel has transparent touch switches arranged in a planar matrix. The printer 35 prints various information such as maps and facility guides output via the communication interface 8. The recording card reader 36 is a reader for a card-type recording medium such as an IC card, a ROM card, or a memory card. The CD-ROM driver 37 is a reading device for a CD-ROM which is a CD (compact disk) type storage medium.
[0018]
The voice recognition device 38 converts the voice picked up by the microphone 39 into a digital signal, determines whether or not a voice that matches a predetermined command is input, and when a voice that matches the command is input The command data is sent to the CPU 2. The voice recognition device 38 may be either a specific speaker recognition method or an unspecified speaker recognition method.
[0019]
The operation switch 40 is a wired remote control switch, a wireless remote control switch, or a manual switch arranged around the display 33, and performs operations other than the contents operated on the touch panel 34 such as menu display, image quality adjustment, and destination setting start. It is a switch for instructing.
[0020]
Various data files as shown in FIG. 2 are stored in the card-type storage medium or an external storage medium such as a CD-ROM. The map data file F1 stores map data such as a national road map. The intersection data file F2 stores data related to the intersection such as the position and name of the intersection. The node data file F3 stores node data set on the road. The road data file F4 stores road-related data such as the position and type of roads, the number of lanes, and the connection relationship between the roads. The photograph data file F5 stores image data of photographs showing places where visual display is required such as various facilities, sightseeing spots, or major intersections.
[0021]
The destination data file F6 stores data such as locations and names of places or facilities that are likely to be destinations such as major tourist spots, buildings, and companies / businesses listed in the telephone directory. . The guidance point data file F7 stores guidance data of points that require guidance such as the contents of guidance display boards installed on the road and guidance of branch points. The detailed destination data file F8 stores detailed data relating to the destination stored in the destination data file F6. The road name data file F10 stores name data of main roads among the roads stored in the road data file F4. The branch point name data file F11 stores name data of main branch points. The address data file F11 stores list data for searching the destination stored in the destination data file F6 from the address.
[0022]
The area / city code list file F12 stores list data of only the area / city code of the destination stored in the destination data file F6. The registered telephone number file F13 stores telephone number data to be remembered such as business partners registered by the user's manual operation. The mark data file F14 stores data such as the location and name of a place to be remembered or a place to be remembered, which is input by the user through a manual operation. The point data file F15 stores detailed data of the mark points stored in the mark data file F14. The target data file F16 stores data such as the position and description of a target such as a place where the user wants to stop in addition to a destination such as a gas station, a convenience store, or a parking lot.
[0023]
FIG. 3 shows details of the contents stored in the target data file F16. The target is classified into a plurality of genres, and the number of classifications is stored as target genre number data JN. Genres are divided into types of facilities and places, such as gas stations, convenience stores, parking lots, hotels, restaurants, family restaurants, soba shops, coffee shops, stations, subway station entrances, hospitals, parks, police, There are post offices, golf courses, golf driving ranges, temples and shrines, cosmetic stores, pharmacies, and other types of facilities and places that may drop in while driving. In each of the genres J1 to Jn, genre code number data JC, target property number data m, and target object list data L1 to Lm determined for each genre are stored.
[0024]
The target list data L1 to Lm includes target name data MM, target telephone number data MT, target coordinate data MZ, and target information information for each of the m target items. MD is stored. The target information data MD stores information related to the target classified into a plurality of items. This item includes, for example, target usage fees, facility capacity (number of parking and capacity, width, height, length of vehicles that can be accommodated), brand (name of gas station distributor, name of chain store, etc.) , Address, service details, parking availability, opening hours, restaurant cuisine, restaurant information (whether it is high-end, whether it is a chain store, whether there is a famous chef, etc.), convenience store Information on items such as a store name and the like which are conditions for selection when the user stops while traveling is stored.
[0025]
FIG. 4 shows a data group stored in the RAM 4. All or part of the data stored in the external storage medium read by the recording card reader 36 or the CD-ROM driver 37 is copied to the external data GD. The current position data MP is current position data of the own vehicle detected by the current position detection device 20. The absolute azimuth data ZD is data obtained based on the data from the absolute azimuth sensor 21. The relative azimuth angle data θ1 is an angle formed by the traveling direction of the vehicle with respect to the absolute azimuth obtained based on the data from the relative azimuth sensor 22.
[0026]
The travel distance data ML is the travel distance of the host vehicle obtained based on the data from the distance sensor 23. The acceleration data ma is the acceleration detected by the acceleration sensor 24. The current position information PI is data relating to the current position input from the beacon receiving device 26 or the data transmitting / receiving device 27. The VICS data VD is VICS data input from the data transmission / reception unit 31. The ATIS data AD is ATIS data input from the telephone transmission unit 32. The registered destination data TP is data relating to the destination such as the position and name of the destination registered by the user.
[0027]
The registered target data SP is data related to the target such as the position and name of the target set by the user. The optimum route data MW is optimum route data obtained by route search processing (step 52) described later. The genre code number JC is the genre code number of the genre selected in the target selection operation process described later. The area designation data AS is data for designating a search area input in the target selection operation process. The sub reference data KS is data for searching for a target input in the target selection operation process. There may be a plurality of sub-reference data KS.
[0028]
The reference position data KP is a reference position for searching for a target determined by a reference position determination process described later. The road information RD is information such as whether a running road used in an automatic setting process described later is an expressway or a general road. The traveling speed data V is the traveling speed of the own vehicle. The search area data KA is coordinate data of a target search area obtained in a target search process described later. The search target data KM is data related to the target searched in the target search process, and is extracted from the external data GD and stored.
[0029]
The reach distance data TK is the reach distance to the search target obtained in the priority determination process described later. The priority order data UN is a priority order displayed for selection of a search target determined in the priority order determination process. The target relative azimuth angle data θ2 is an angle formed by the search target with respect to the absolute direction. The target object direction data θ is an angle formed by the traveling direction of the own vehicle and the search target object. The destination avoidance data MK is the initial destination data stored before the target is registered in the target registration process. Although not shown, the RAM 4 stores data for various other processes, variable data, and the like.
[0030]
FIG. 5 is a flowchart of the entire process executed by the CPU 2. This process starts when the power is turned on and ends when the power is turned off. At the start, initialization processing of the CPU 2, RAM 4, image memory 9 and the like is performed. Then, the current position acquisition process (step 50), the destination setting process (step 51), the route search process (step 52), and the guidance display process (step 53) are repeatedly executed.
[0031]
In the current position acquisition process (step 50), the current position of the host vehicle is calculated based on the data sent from the current position detection device 20. In the calculation process of the current position, the latitude and longitude are calculated from the data input from the GPS receiver 25, and the latitude and longitude are stored in the RAM 4 as current position data MP. The current position data MP is corrected by information regarding the current position input from the beacon receiving device 26 or the data transmitting / receiving device 27.
[0032]
Further, a calculation process for specifying the vehicle position is performed based on the absolute bearing data ZD, the relative bearing data SD, and the travel distance data ML. The own vehicle position obtained by this calculation process is collated with the map data in the external data GD, and correction is performed so that the current position on the map screen is accurately displayed. With this correction process, the current position of the vehicle can be accurately obtained even when GPS signals in the tunnel or the like cannot be received. The travel distance data ML is corrected by the acceleration data ma in order to take into account errors due to tire slip and the like.
[0033]
In the destination setting process (step 51), a destination setting operation process and a target selection operation process are executed. In the destination setting operation process, a destination setting input screen is displayed on the display 33 by a destination registration operation by the user. The user can specify the destination from any one of the address, telephone number, and name. Further, when one genre is selected from the genre menu such as sightseeing spots and various facilities, a plurality of destinations stored in the selected genre are displayed on the display 33 in the form of a list. Further, detailed guidance for each destination can be displayed. When the destination is determined, by performing an operation for instructing the determination of the destination, data regarding the determined destination is stored in the RAM 4 as registered destination data TP.
[0034]
The target selection operation process is a process of setting a place where the user wants to stop as a target when there is a place where he / she wants to stop while traveling to the destination. Data relating to the set target is stored in the RAM 4 as registered target data SP. Details of the target selection operation processing will be described later.
[0035]
In addition, the destination setting operation process and the target selection operation process can be performed by voice input by the voice recognition device 38 in addition to the touch operation of the touch panel 34 and the manual operation by the switch operation of the operation switch 40. Switching between manual operation and voice input operation is performed by a changeover switch 41 provided in the operation switch 40. The switching operation between the destination setting operation process and the target selection operation process is also performed by the changeover switch 42 provided in the operation switch 40. This destination setting process (step 51) is jumped when a new destination setting operation or a new target selecting operation is not performed.
[0036]
In the route search process (step 52), the optimum route to the destination or the target is searched based on the registered destination data TP or the registered target data SP, the current position data MP, and the map data. The route data MW is stored in the RAM 4. The optimum route is displayed with a bold red line in the map screen displayed on the display 33. This route search process (step 52) is jumped if there is no change in the optimum route.
[0037]
In the guidance / display process (step 53), the guidance is pronounced by voice from the speaker 13 or displayed on the map screen so that the vehicle can travel according to the optimum route obtained in the route search process (step 52). Is done.
[0038]
By repeating the above processing, the optimum route to the destination or target registered by the user, the current position and the traveling direction of the vehicle are displayed on the map screen displayed on the display 33, and The current position is corrected according to the progress of the vehicle, and when approaching a point where guidance such as an intersection or a branch point is required, the guidance is notified by voice or display.
[0039]
FIG. 6 is a flowchart of the target selection operation process (step 100) executed in the destination setting process (step 51). This process is started when a target selection operation is instructed by operating the destination / target switching switch 42. In addition, since the target selection operation is performed while traveling, in consideration of driving safety, when the start of this process is instructed, it is automatically set to a state in which an operation by voice input is possible. When the user operates the manual / sound changeover switch 41 to switch to the manual operation, the target can be selected by the manual operation of the operation switch 40. Further, this processing may be executed by performing voice input during travel guidance without operating the changeover switch.
[0040]
The target selection operation process (step 100) is repeatedly executed in the same manner as the current position acquisition process (step 50), the route search process (step 52), and the guidance / display process (step 53). When approaching an intersection during the target selection operation, etc., the target selection operation is interrupted by interruption processing for a few seconds, and guidance by voice and display is performed. The current position may be displayed.
[0041]
In this target object selection operation process (step 100), a process for determining a search target for a target object (step 102), a process for determining a reference position of a range for searching for a target object (step 104), and a target object in accordance with the search standard. Processing for searching (step 106), processing for determining priority according to whether the searched target matches the user's desire (step 108), processing for displaying the target with priority (Step 110), a process of registering one target selected by the user (Step 112) is sequentially executed.
[0042]
FIG. 7 is a flowchart of the search criteria determination process (step 102). In the genre input process (step 120), first, a command signal is sent from the CPU 2 to the audio processor 11, and the question "What is the genre" is pronounced from the speaker 13, for example. Instead of the pronunciation of this question, the user may input with a key of a predetermined touch panel 34 for voice input.
[0043]
If there is a voice input from the voice recognition device 38 during a predetermined standby time, the CPU 2 converts the input voice data into code data by a predetermined calculation. Then, the input code data and the genre code number JC of the target object data file F16 in the external data GD are collated to obtain a matching genre code number. The genre code number data JC that matches this voice input is stored in the RAM 4. For example, when the user wishes to stop at the gas station on the way to the destination, the genre code number JC of the gas station is stored by saying “gas station”.
[0044]
In the area input process (step 122), a command signal is sent from the CPU 2 to the voice processor 11, and a voice “Please specify a search area” is generated from the speaker 13. It should be noted that instead of this sound generation, key input on the touch panel 34 may be used. If there is a voice input from the voice recognition device 38 during the predetermined standby time, the voice data input by the CPU 2 is converted into the area designation data AS and stored in the RAM 4. In addition, it is possible to search for a target from all data without specifying an area in this way, but when assigning priorities to the searched targets as described above, the target closest to the reference position is selected. In many cases, it is faster to search by setting an area in advance.
[0045]
When the scale of the map screen displayed during navigation to the destination can be selected from two types, “wide” and “detail”, for example, the user can say “Kouiki” to display a wide area. The wide area designation data is stored as area designation data AS so that the search area is in the screen. Further, the detailed designation data is stored as the area designation data AS so that the detailed display screen is set as the search area when the user utters “Show Sai”.
[0046]
In addition, when three or more scale values on the map display screen can be selected, a word for selecting each scale is determined, and when the user utters the corresponding scale size data, the corresponding scale size data is the area designation data. Stored as AS. Further, as described above, in addition to designating the entire map screen displayed at a predetermined scale as a search area, a reference position to be described later can be obtained by voice input such as “radius 10 km” or “10 km square”. A range with a predetermined radius or a predetermined distance around KP can be used as a search area. In this case, the radius data or side length data inputted by voice is stored as the area designation data AS. In addition, by inputting a specific “city name” by voice, a range where the city exists can be set as a search area.
[0047]
The genre and search area of the target are the main search criteria, and in the next step 124, a specific sub-reference is input for each genre of the target. In this process, a command signal is sent from the CPU 2 to the sound processor 11, and a sound requesting a sub-reference with content corresponding to the specified genre code number JC is generated from the speaker 13. For example, if the designated genre is “gas station”, the sound “What is the brand” is pronounced, and if the designated genre is “restaurant”, the sound “what is the type of dish” is pronounced.
[0048]
If there is a voice input from the voice recognition device 38 during a predetermined standby time, the voice data input by the CPU 2 is converted into the sub reference data KS and stored in the RAM 4. Further, the CPU 2 automatically selects the sub-criteria related to items that do not require user selection and stores them in the RAM 4. For example, sub-reference data KS indicating “parking” or the like is stored when “direction” or the designated genre is parking. This sub reference is an item stored in the target information data MD of the target data file F16.
[0049]
FIG. 8 is a flowchart of the reference position determination process (step 104). First, a command signal is sent from the CPU 2 to the voice processor 11, and a voice “Please specify a reference position” is produced from the speaker 13. By the time the predetermined waiting time elapses, the user displays on the display 33 the current position, the destination set before the start of traveling, the passing points such as intersections and buildings existing on the optimum route to the destination, and so on. A desired point is input by voice from the center of the map screen being displayed, the intersection on the optimum route display currently displayed on the display 33, or the point on the route such as a building.
[0050]
When there is a voice input by the user, the content of the voice input data is analyzed by the CPU 2 and when a position away from the current position is specified, the specified point is stored in the RAM 4 as the reference position data KP. Stored (step 148). That is, when the destination is designated (step 134), the position data on the map of the registered destination data TP is read and stored as the reference destination data KP.
[0051]
The designation of the passing point or the point on the route (steps 136 and 140) is because the name of the intersection or the building is inputted by voice by the user, so that the CPU 2 uses the intersection data file F2 and the destination data file F6. A point having name data identical to the name data input by voice is searched. Then, the position data of the obtained point is stored as the reference position data KP. When the map center is designated (step 138), the position data of the center coordinates of the map screen displayed on the display 33 is stored as the reference position data KP. In addition, you may enable it to designate as a reference | standard position other than the above points.
[0052]
When the current position is designated (step 132) or when there is no voice input within the predetermined waiting time (step 130), the current position or a position away from the current position is determined based on the road information currently being traveled. An automatic setting process (step 142) for setting the reference position is performed. When the current position is set as the reference position by the automatic setting process (step 144), a process (step 146) for correcting the reference position according to the traveling speed is executed. The above input may be a key input such as a touch panel instead of voice.
[0053]
FIG. 9 is a flowchart of the reference position automatic setting process (step 142). The current position data MP is read from the RAM 4 by the CPU 2 (step 150). Then, the road data file F4 is searched based on the current position data MP, and the road information on running is obtained (step 152). This may be obtained from the current position information PI stored in the RAM 4. The obtained road information RD is stored in the RAM 4. In this road information RD, “01” is set if the running road is a highway, “10” if it is an elevated road or tunnel, and “00” if it is not.
[0054]
Even if the current position is designated as the reference position by the user, if the road currently being driven is an expressway, the target area other than the service area can only be reached by going down to the general road. The point where you get off is the reference position. In other words, the interchange scheduled to get off on the optimum route to the destination is retrieved from the map data file F1, and the position of this interchange is stored in the RAM 4 as the reference position KP (step 156).
[0055]
Also, if the currently running road is an elevated road or tunnel, it is not possible to turn right or left from the current position, so the next appearing intersection is retrieved from the intersection data file F2, and the position of this intersection is the reference position KP. (Step 160). If the currently running road is a general road that is neither an elevated road nor a tunnel, the current position MP is set as the reference position KP. This current position MP is further converted into a reference position correction process (step 146). It is corrected by.
[0056]
FIG. 10 is a flowchart of the reference position correction process (step 146). When the current position is selected as the reference position, it is impossible to make a sudden right or left turn, so that the reference position is corrected ahead of the current position according to the traveling speed V. The CPU 2 detects the current traveling speed V from the clock signal from the timepiece 6 and the traveling distance data ML from the distance sensor 23 (step 170). This may be travel speed data output from a speedometer (not shown).
[0057]
Then, the correction distance AL corresponding to the detected traveling speed is obtained by the CPU 2 (step 172). The correction distance AL is determined by executing a predetermined calculation or reading out from a memory table stored in advance in association with the traveling speed V and the correction distance AL. Next, the CPU 2 reads the current position data MP from the RAM 4 (step 174), and the position obtained by adding the correction distance AL ahead of the current position is set as the reference position (step 176). The corrected position is stored in the RAM 4 as reference position data KP.
[0058]
FIG. 11 is a flowchart of the target search process (step 106). When the user specifies the radius or side length of the search area in the search reference determination process (step 102) (step 180), the CPU 2 reads the reference position data KP and the area specification data AS in the RAM 4. (Step 182) A circle having a radius inputted by the user centered on the reference position or a square having one side of the length inputted by the user is assumed as a search area (Step 184). The assumed search area KA is stored in the RAM 4 in the form of circle or square map coordinate data centered on the reference position KP.
[0059]
Further, when the user designates “wide area”, “details”, or a scale size in the search criteria determination process (step 102), the CPU 2 determines the contents of the area designation data AS (step 186), The reference position data KP is read (step 188). Then, a range of the map screen is assumed so that the center of the map screen of the scale specified by the user matches the reference position KP, and the map coordinate data of this range is stored in the RAM 4 as the search area KA (step 190).
[0060]
Then, the genre code number data JC stored in the RAM 4 is read by the CPU 2 (step 192), and the genre that matches the genre code number JC is read from the target data file F16 and further read. By searching the target coordinate data in the genre, the target existing in the map coordinates of the search area KA is searched (step 194). The name data MM, telephone number data MT, coordinate data MZ, and information data MD of each searched target are read out and stored in the RAM 4 as search target data KM.
[0061]
FIG. 12 is a flowchart of the priority order determination process (step 108). First, the current position data MP in the RAM 4 is read by the CPU 2 (step 200). Further, the map coordinate data MZ of each search target is read from the search target data KM (step 202). Then, the reach distance TK from the current position to each search target is calculated (step 204). This reach distance TK is a straight-line distance obtained by the Pythagorean theorem, or a route to each search target obtained using the map data file F1 (the shortest route or an optimum route in consideration of road information) Good). The obtained reach distance data TK to each search target is stored in the RAM 4.
[0062]
Further, the sub reference data KS in the RAM 4 is read into the CPU 2 (step 206), the reach distance TK is weighted according to the sub reference data KS, and unnecessary search target data KM is deleted (step 208). ). Then, the priority order is determined according to the reach distance TK weighted by the CPU 2 and the remaining search target data KM (step 210). The determined priority order data UN is stored in the RAM 4.
FIGS. 13 and 14 are flowcharts of the process (step 208) for changing the reach distance TK according to the sub-reference data KS. In this process, the CPU 2 determines the inside of the sub reference data KS (steps 220, 250, 260,...). When data indicating “direction” is stored in the sub-reference data KS, it is determined whether or not the reference position data KP is the current position (step 222). When the current position is set as the reference position, the angle between each search target and the own vehicle is calculated, and from this calculation result, each search target exists in which direction relative to the traveling direction of the own vehicle. Is determined (step 224).
[0063]
The angle between each search target and the vehicle is calculated as follows. First, the CPU 2 reads the relative azimuth angle data θ1 from the RAM 4. The relative azimuth angle θ1 is an angle formed by the traveling direction of the own vehicle with respect to the north direction, and is represented by values of 0 to 180 degrees counterclockwise from the north direction and 0 to −180 degrees clockwise. . Further, the CPU 2 reads the current position data MP and the coordinate data MZ of each search target from the RAM 4, calculates tan θ2 from the coordinate data MZ and the current position data MP, and calculates each search target from the calculated tan θ2. A relative azimuth angle θ2 with respect to the north direction of the object is obtained. The relative azimuth angle θ2 of the search target is stored in the RAM 4.
[0064]
Then, the CPU 2 determines the direction θ of the search target relative to the traveling direction of the host vehicle.
θ = θ2-θ1
This target direction data θ is stored in the RAM 4. Furthermore, in this target direction θ,
When θ> 180 degrees… θ = θ-360 degrees
When θ <−180 degrees… θ = 360 degrees + θ
The arithmetic processing is performed.
[0065]
And it is discriminate | determined from which direction each search target exists with respect to the own vehicle from the result of this arithmetic processing. This direction is determined according to the following criteria.
“Left forward” when 0 ≦ θ ≦ 90
“Right forward” if −90 ≦ θ <0
If 90 <θ ≤ 180, "Left-Left"
“Right rear” when −180 ≦ θ <−90
This determination result is added to each search target data KM in the form of a flag. For example, “01” is added as a flag in the case of “front left”, “10” in the case of “right front”, “11” in the case of “left rear” or “right rear”. The
[0066]
Next, if the direction of the target is “left front”, the CPU 2 multiplies the target reach distance TK by “1” and updates and stores the new reach distance TK in the RAM 4 (step 230). ). If the direction of the target is “right front”, the arrival distance TK of this target is multiplied by “1.5” and updated and stored in the RAM 4 as a new arrival distance TK (step 234). If the direction of the target is “left rear” or “right rear”, the target reach distance TK is multiplied by “2” and updated and stored in the RAM 4 as a new reach distance TK (step 238). ).
[0067]
In this way, in the case of left traffic, since it is easy to drop in the order of “front left”, “front right”, and “backward”, weighting is performed so as to reduce the reach of the target that is most likely to drop. The calculation of the direction and the weighting process (steps 222 to 238) are executed for all of the search target objects KM (step 240).
[0068]
If the reference position is not the current position, the reference position data KP is read, and the above processing is executed using the reference position data KP instead of the current position. Thus, the direction of the target with respect to the position of the host vehicle at the reference position is obtained, and the reach distance TK is weighted according to the direction of the target. The azimuth angle θ1 of the own vehicle at the reference position is an angle formed by the traveling direction of the optimum route at the reference position with respect to the north direction, and is obtained by calculation from the road data file F3.
[0069]
When the designated genre is “parking”, data corresponding to “parking” is stored in the sub-reference KS. When the sub-reference KS is sequentially read out by the CPU 2 and this “parking” data is included, road information such as VICS data VD or ATIS data AD is read as shown in FIG. Then, “full vehicle information data” is picked up from the read information (step 252). This full vehicle information data is added to the search target data KM in the form of a flag. Then, the search target data KM to which “full vehicle information data” is added is deleted by the CPU 2. As a result, full parking is no longer displayed as a target.
[0070]
Next, the CPU 2 reads out the accommodation number data in each of the remaining search target data KM, and weights the arrival distance TK of each search target according to this accommodation number. For example, the reach distance TK is multiplied by “2” when the number of accommodation is less than 50, “1.5” when 50 to 99, and “1” when 100 or more. Thereby, weighting is performed so that the reach distance TK becomes a smaller value as the number of accommodation is larger.
[0071]
When the designated genre is “gas station”, “convenience store”, or the like, “brand name” data such as a distribution company and a chain store name is included in the sub-standard KS. In this case, the CPU 2 compares the code data of the designated brand with the brand codes of the remaining search target data KM, and erases the search target data KM of the brand different from the designated brand. The That is, only the search target data KM for the specified brand is selected and extracted (step 262). Thus, the target other than the brand specified by the user is not displayed.
[0072]
Furthermore, although illustration and explanation are omitted, in addition to the above sub-criteria, for example, “upper and lower limits” such as direction, distance, and charge, “designated range” such as city, out-of-city, number of accommodations, business hours, etc. , “Selection designation” for specific targets, “exclusion designation” for specific targets, “charges”, “position” such as near a pond or a port, “altitude” such as on a mountain or rooftop, in the sea or underground, etc. “Depth” or “size”, “attribute”, “characteristic”, “content”, “property”, etc. can be used as the sub-reference KS. When such a sub-reference KS is stored in the RAM 4, the reach distance TK is weighted or unnecessary search target data KM is deleted according to the sub-reference KS.
[0073]
In addition to road information, based on route information to the target such as information on the area where the target exists, construction and traffic regulations, and the presence of steep hills, the search distance is weighted or unnecessary search target The material data KM is erased.
[0074]
FIG. 15 is a flowchart of the priority order determination process (step 210). The remaining search target data KM is read by the CPU 2 and the reach distance data TK corresponding to the remaining search target data KM is read (step 270). The read reach distance data TK are arranged in ascending order (step 272), and the priority order is determined in ascending order of reach distance data TK (step 274). The priority order data UN is stored in the RAM 4 so as to correspond to each search target data KM.
[0075]
FIG. 16 is a flowchart of the target display process (step 110). The search target data KM and the priority order data UN remaining from the RAM 4 are read by the CPU 2 (step 280). Then, a command is sent from the CPU 2 to the image processor 9, and a scaled map screen designated with the reference position KP as the center is read from the image memory 10.
[0076]
The image data read from the image memory 10 is added with the mark, name and priority of the search target, and this image data is displayed on the display 33 as a map screen (step 282). For example, when “soba restaurant” is designated as the genre of the target, as shown in FIG. 17, numbers 63 to 65 indicating the name and priority are displayed on the map screen along with target marks 60 to 62. Is displayed.
[0077]
Note that FIG. 17 is an example in which names and priorities are assigned only to the targets with the first to third priorities. Further, when the user touches the character of “List” on the screen with his / her finger, the contents such as the name of each search target KM, the telephone number, the rank of the quality of the store, and the like as shown in FIG. The list is displayed on the display 33 (steps 284 and 286). By touching the “return” character 67 on the screen with a finger, the display returns to the map screen display of FIG. This list can also be printed by the printer 35.
[0078]
Then, when the user touches the target marks 60 to 62 in FIG. 17 or the priority order (number at the left end in the figure) or name in FIG. 18 with a finger, the position of the touched target is centered on the screen. Is displayed on the display 33 (steps 288 and 290). For example, if “Yamamotoya” in FIG. 17 or 18 is selected, as shown in FIG. 19, the Yamamotoya mark 60 moves to the center of the screen, and the shop name 68 is displayed at the top of the screen. In this state, if the “return” character 67 is touched with a finger, the display returns to the display screen of FIG. If the “set” character 72 is touched, this Yamamotoya is registered as the destination (steps 292 and 112).
[0079]
When the “position change” character 71 is touched, a center cursor 69 displayed as a small circle surrounding the center of the screen and an arrow 70 indicating eight directions are displayed around the center cursor 69 (steps 294 and 296). This screen is used when the user wants to change the target displayed in the center of the screen to another target. When the user touches one of the arrows 70, the screen is scrolled in the direction of the touched arrow 70 (step 296).
[0080]
The user performs a touch operation of the arrow 70 so that the desired target mark enters the center cursor 69 by scrolling the screen. For example, when the user selects the mark 73 in FIG. 19, the screen is scrolled so that the mark 73 enters the center cursor 69 as shown in FIG. 20. The new target to be selected is not limited to the genre designated by the user, and can be freely selected from the place or facility displayed on the display 33. FIG. 20 shows a case where a restaurant is selected.
[0081]
When the touch input of the arrow 70 is not performed for a predetermined time, the display of the arrow 70 is turned off, and the destination setting screen on which the “position change” character 71 and the “set” character 72 are displayed is displayed. When the “position change” character 72 is touched in this state, the arrow 70 is displayed again, and the screen can be scrolled. When the “set” character 72 is touched, the target in the center cursor 69 is registered as the destination (steps 292 and 112).
[0082]
FIG. 21 is a flowchart of the target registration process (step 112). When the “set” character 72 is touched in the state where the destination setting screen is displayed, the initial registered destination data TP set in the destination setting operation processing by the CPU 2 is stored in the RAM 4. It is transferred and stored in a predetermined avoidance area MK (step 300). As a result, data regarding the original destination is stored.
[0083]
Next, the CPU 2 reads the coordinates of the center of the screen (step 302), the facility data having the coordinates is retrieved from the target data file F16 in the RAM 4, and the corresponding target data is read (step 304). ). Then, the target data is stored in the RAM 4 as new registered destination data TP (step 306).
[0084]
When the registration of the target is completed, the target becomes a new destination, the display screen of the display 33 returns to the map screen around the vehicle, and the route search process to the target (step 52) and the guidance / display process. (Step 53) is performed. As a result, navigation to the target designated by the user is performed by displaying an optimum route to the target, intersection guidance, or the like. Then, after the user stops at the target, by performing the destination return operation, the originally avoided destination data is set in the destination data TP again, and navigation to the original destination is resumed. The
[0085]
As described above, the navigation device of this embodiment can select a target object with a simple operation when a place where the user wants to drop in occurs on the way to the initially set destination. In addition, when there are multiple selected targets, the priority order is automatically determined in order from the target that matches the user's wishes based on the criteria specified by the user or automatically set criteria, Since the priority order is displayed so as to be easily understood by the user, the time for determining the target for the user is shortened, and the safety during the target selecting operation is maintained.
[0086]
Further, by inputting the reference position or the search reference information by input means such as voice input, a touch panel, or a switch, it is possible to narrow down the target desired by the user in terms of position or content. As a result, the processing can be speeded up, and a target suitable for the user's request can be searched. In addition, since operation by voice input is possible, even if a target selection operation is performed during driving, the driving safety is not impaired.
[0087]
In addition, since the reference position is changed according to a predetermined condition (steps 104, 142, and 146), the reference position can be set according to the current traveling state. For example, when the speed of the host vehicle is high, the reference position can be set further forward, and an interchange that goes down while traveling on a highway can be set as the reference position. Further, since the reference position can be set to a position apart from the current position in addition to the current position (step 104), it is possible to search for a target that meets the user's desire regarding the positional condition.
[0088]
Furthermore, the search criteria are not fixed, and can be made variable depending on the genre of the target, or can be changed according to the user's preference (step 102). As a result, it is possible to provide information on the target that better matches the user's wishes. In addition, by assigning priorities to the targets based on geographical relationships such as distance and direction (step 208), it is possible to obtain information on the targets based on the ease of reaching the target. Become. Also, by assigning priorities according to the content of information relating to the target (steps 250 and 260), it is possible to obtain information on the target based on a reference according to the genre of the target.
[0089]
Furthermore, since the target information is stored for various items (target data file F16), it is possible to set various search criteria and respond to the user's various desires. The most suitable target can be searched and displayed. In addition, by incorporating external information such as VICS and ATIS and determining the priority order of targets (steps 208 and 252), it is possible to obtain on-time information such as full parking information, road congestion, or store information. Therefore, it is possible to obtain information on the target that more closely matches the user's wishes. Further, by displaying the searched target object with priority (step 110), the user can immediately determine which target object most matches the user's desire. it can.
[0090]
The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention. For example, the external recording medium for storing various data files shown in FIG. 2 may be a writable recording medium such as a floppy disk.
[0091]
Further, the sub reference data KS is not limited to the items stored in the target information data MD in the target data file F16, but is registered so that the user can freely register items determined in advance. An item may be selected as the sub reference KS in the target selection operation process (step 100).
[0092]
Further, in the target object display process (step 110), when displaying the search target object and the priority order, the list screen as shown in FIG. 18 is displayed before the map screen as shown in FIG. You may make it switch to a map screen by predetermined | prescribed operation. Moreover, the display of the priority order during the display of the map screen as shown in FIG. 17 or the display of the list screen as shown in FIG. 18 may be any display as long as it is easy to understand for the user. For example, the display color, brightness, illuminance, size, and shape of the target mark and name may be changed according to the priority order, or the display may blink. This makes it easier for the user to obtain information visually, which is particularly convenient when operating while driving. Of course, the priority order may be pronounced by voice.
[0093]
Further, the reference position KP may be fixed at one point specified in advance such as the current position or the destination, and may not be selected by the user, thereby reducing the amount of processing and inexpensive navigation. An apparatus can be provided. Furthermore, the present invention can also be applied to navigation devices such as vehicles other than automobiles, ships, airplanes, helicopters, etc. The map used for navigation may be a nautical chart or a submarine map in addition to a road map.
[0094]
Furthermore, the following can be shown as means for solving the problems of the prior art.
[0095]
In the navigation device, for a plurality of targets, target object storage means for storing information representing the target object and information related to the target object in association with each other, and searching for the target object stored in the target object storage means Reference position storage means for storing reference position information, search reference information generating means for generating search reference information as a reference for searching for a target stored in the target storage means, and the search reference information The target information corresponding to the search reference information generated from the target object information reading means for reading information representing the target object from the target object storage means or information relating to the target object, and the reference position information from the reference position storage means Reference position information reading means to be read and information indicating each target read by the target information reading means Priority order determining means for determining the priority order of each target object from the relationship between the information about the object and the reference position information read out by the reference position information reading means, and information on the priority order determined by the priority order determining means Display means for displaying.
[0096]
In other navigation devices, further comprising an input means such as a voice input device, or a touch panel mounted on the display surface of the map display device, or a switch, information relating to operations performed by the user is input by this input means, Alternatively, the reference position information or search reference information is input by this input means.
[0097]
In still another navigation apparatus, reference position information for changing the reference position information read by the reference position information reading means in accordance with predetermined conditions such as the type of road being traveled, the traveling speed, and road network information. A changing means is provided.
[0098]
In still another navigation device, the search criteria information further includes an upper limit and a lower limit, a specified range, a specific target selection specification, a specific target exclusion specification, a target type, or Regarding the property of the target, it is data input from the outside, data input by the user manually, or data stored in advance.
[0099]
In still another navigation apparatus, the reference position is a current position or a position away from the current position, and the reference position is fixed or changeable.
[0100]
In still another navigation apparatus, the relationship between the target information and the reference position information is a geographical relationship such as a distance or a direction, or a relationship between information contents related to the target.
[0101]
In still other navigation devices, the information representing the target is the type of facility, building, or terrain, or the type or content of the target, or the position, altitude, depth, and size of the target. , Attributes, characteristics, properties, etc.
[0102]
In still another navigation device, the priority order determination means further determines the priority order based on route information to a target such as road information and area information input from the outside via a communication medium.
[0103]
In still another navigation device, the display means displays the priority order together with the searched target mark on the map screen of the map display device, or displays the priority order in the form of a list on the map display device. Or the priority order is displayed by changing the color of the mark of the target displayed on the map screen of the map display device in accordance with the priority order.
[0104]
Further, in another navigation apparatus, for a plurality of targets, means for storing information representing the target and information related to the target in association with each other, and means for setting reference position information in searching for the target And means for generating search reference information as a reference for searching for the target, and information indicating the target or information regarding the target for the target according to the generated search reference information. Means for reading out, means for determining the priority of each target from the relationship between the information representing each read target or information relating to the target and the set reference position information; and And a means for outputting in the order of the determined priorities.
[0105]
In still another navigation device, the targets are further displayed in the form of a list in the order of the determined priorities.
[0106]
Further, in another navigation apparatus, for a plurality of targets, means for storing information representing the target and information related to the target in association with each other, and means for setting reference position information in searching for the target And means for generating search reference information as a reference for searching for the target, and information indicating the target or information regarding the target for the target according to the generated search reference information. Means for reading out, means for determining the priority of each target from the relationship between the information representing each read target or information relating to the target and the set reference position information, and the determined priority And means for outputting rank information corresponding to the target.
[0107]
In the navigation method, for a plurality of targets, a means for storing information representing the target and information related to the target in association with each other is configured to set reference position information when searching for the target, When searching for a target, search reference information that serves as a search reference is generated, and for the target according to the generated search reference information, information representing the target or information about the target is read out, and the reading is performed. The priority of each target is determined from the information representing each target that has been issued or the relationship between the information about the target and the set reference position information, and the target is placed in the order of the determined priority. Output.
[0108]
In the target object search device, search reference information serving as a reference for searching for a plurality of target objects is generated, and a priority is assigned to each target object to be searched according to the generated search reference information. Means for determining and outputting the targets in the order of priority.
[0109]
In another target object search device, the plurality of target objects further include at least information representing the target object and information related to the target object, and the search reference information searches for the target object. Including the search reference information as a search reference and the reference position information for searching for the target. The priority of each target includes the information on each target and the reference position information. Or is determined from the relationship between the two pieces of information.
[0110]
Further, in another target object search apparatus, according to means for storing target object information for a plurality of target objects, reference position information for searching for the target object, and search reference information serving as a search reference Means for determining the priority of each target to be searched;
Means for outputting the targets in the order of the determined priorities.
[0111]
Further, in another target object search device, search reference information serving as a reference for searching for a plurality of target objects is generated, and each target object to be searched is generated according to the generated search reference information. Means for determining priority and outputting information on the priority.
[0112]
Further, in another target object search device, based on a means for storing target object information for a plurality of target objects, information on a reference position for searching for the target object, and search reference information serving as a search reference. Means for determining the priority of each target to be searched, and means for outputting information on the determined priority corresponding to the target.
[0113]
In the target search method, search reference information serving as a reference for searching for a plurality of targets is generated, and a priority order is set for each target to be searched according to the generated search reference information. Each target is output in the order of priority.
[0114]
In another target object searching method, for a plurality of target objects, the reference position information for searching the target object and the search reference information serving as a reference for the search are stored in the means for storing the target object information. In response, the priority of each target to be searched is determined, and the targets are output in the order of the determined priority.
[0115]
Further, in another target object search method, search reference information serving as a reference for searching for a plurality of target objects is generated, and each target object to be searched is generated according to the generated search reference information. The priority order is determined, and information on the priority order is output.
[0116]
In still another target object searching method, for a plurality of target objects, reference position information for searching for the target object and search reference information serving as a search criterion are stored in the means for storing the target object information. The priority order of each target object to be searched is determined based on the information, and information on the determined priority order is output in correspondence with the target object.
[0117]
Then, for a plurality of targets, target storage means (external recording medium, RAM 4, target data file F16) for storing information representing the target and information related to the target in association with each other, and this target storage means Reference position storage means (RAM4, step 104) for storing reference position information in searching for the target stored in the memory, and a search serving as a reference for searching for the target stored in the target storage means Search target information generating means (RAM 4, steps 102, 182, 186, 192) for generating reference information, and a target corresponding to the search reference information generated from the search reference information, the target object from the target storage means. Target information reading means (step 106) for reading out the information representing or information relating to the target, and the reference position storage means The reference position information reading means (steps 200 and 226) for reading the reference position information, the information of each target read by the target information reading means, and the reference position information read by the reference position information reading means Priority determining means (step 108) for determining the priority order of each target from the relationship with the above, and display means (step 110) for displaying information on the priority determined by the priority order determining means. Is a navigation device characterized by The present invention searches for a target desired by a user based on search reference information serving as a reference for searching for a target, and further determines the priority of each target from the relationship between the target information and the reference position information. The determined priority order information is displayed. As a result, even when the automobile is running, the user can select a target that meets his or her needs in a short time with reference to the priority. For this reason, it is possible to concentrate on driving.
[0118]
In addition, this invention is not limited to the said Example, Based on the meaning of this invention, it can be variously deformed and they are not excluded from the scope of the present invention.
[0119]
【The invention's effect】
  As described above in detail, according to the present invention, in the target object search apparatus, means for storing information on a plurality of target objects, and a search reference position for searching for the target object are provided.Depending on the driving situationMeans for determining, means for searching for the target with reference to the search reference position, and means for outputting information relating to the searched target.HighAn interchange that gets off from a highway to a general road is determined as the search reference position.
  In another target object search device, the traveling state is that the vehicle is traveling on a highway.
[0120]
In this case, when the vehicle is traveling on the expressway, the target is searched for using the interchange from the expressway to the general road as the search reference position, so that the search result can be used effectively.
[0121]
  In still another target object search device, means for storing information on a plurality of target objects and a search reference position for searching for the target object are provided.Road typeAnd means for searching for the target with reference to the search reference position, and means for outputting information on the searched target.Depending on the road typeThe intersection ahead of the current position is determined as the search reference position..
[0122]
In this case, if the car is traveling on an elevated road, in a tunnel, etc. where the course cannot be changed, the target is searched using the intersection ahead of the current position as the search reference position. Can be used.
[0123]
  In still another target object search device, means for storing information on a plurality of target objects, means for determining a search reference position for searching for the target object in accordance with a driving situation, and the search reference position as a reference Means for searching for the target, and means for outputting information about the searched target,If you are traveling on an elevated road or tunnel,Ahead of the current positionintersectionIs determined as the search reference position.
[0124]
In this case, when the traveling speed of the automobile is high, the target is retrieved using the position ahead of the current position as the retrieval reference position according to the traveling speed, so that the retrieval result can be used effectively.
[Brief description of the drawings]
FIG. 1 is an overall circuit diagram of a navigation device.
FIG. 2 is a diagram showing data files stored in an external storage medium.
FIG. 3 is a diagram showing the contents of a target object data file F16.
FIG. 4 is a diagram showing data stored in a RAM 4;
FIG. 5 is a flowchart of overall processing.
FIG. 6 is a flowchart of a target selection operation process.
FIG. 7 is a diagram illustrating a flowchart of search criterion determination processing.
FIG. 8 is a flowchart of a reference position determination process.
FIG. 9 is a flowchart of a reference position automatic setting process.
FIG. 10 is a diagram illustrating a flowchart of a reference position correction process.
FIG. 11 is a diagram illustrating a flowchart of target search processing.
FIG. 12 is a diagram illustrating a flowchart of priority order determination processing;
FIG. 13 is a diagram showing a part of a flowchart of a reach distance changing process.
FIG. 14 is a diagram illustrating the remaining part of the flowchart of the reach distance changing process.
FIG. 15 is a diagram illustrating a flowchart of priority order determination processing;
FIG. 16 is a diagram illustrating a flowchart of target display processing;
17 is a diagram showing an example in which a target is displayed on a map screen of the display 33. FIG.
18 is a diagram showing an example in which a list of targets is displayed on the display 33. FIG.
19 is a diagram showing an example of an object setting screen displayed on the display 33. FIG.
FIG. 20 is a diagram illustrating an example of a screen of the display 33 during a position change operation.
FIG. 21 is a diagram illustrating a flowchart of target registration processing.
[Explanation of symbols]
1 Central processing unit
2 ... CPU
3, 5 ... ROM,
4 ... RAM
9. Image processor
10. Image memory
11 ... Voice processor
13 ... Speaker
20 ... Current position detection device
21 ... Absolute direction sensor
22 ... Relative direction sensor
23 ... Distance sensor
25 ... GPS receiver
26: Beacon receiving device
27: Data transmission / reception device
30. Data communication device
31 ... Data transmitter / receiver
32 ... Telephone calling part
33 ... Display
34 ... Touch panel
36 ... Recording card reader
37 ... CD-ROM driver
38 ... Voice recognition device
39 ... Microphone
40 ... Operation switch
41 ... Manual / audio switch
42 ... Destination / target switching switch

Claims (4)

(A) means for storing information relating to a plurality of targets;
(B) means for determining a search reference position for searching for the target object according to a traveling situation;
(C) means for searching for the target with reference to the search reference position;
(D) means for outputting information relating to the searched target,
(E) An object retrieval device that determines an interchange that gets off from an expressway to a general road as the retrieval reference position. The target retrieval apparatus according to claim 1, wherein the traveling state is traveling on an expressway. (A) means for storing information relating to a plurality of targets;
(B) means for determining a search reference position for searching for the target according to a road type ;
(C) means for searching for the target with reference to the search reference position;
(D) means for outputting information relating to the searched target,
(E) A target searching apparatus that determines an intersection ahead of the current position as the search reference position according to the road type . (A) means for storing information relating to a plurality of targets;
(B) means for determining a search reference position for searching for the target object according to a traveling situation;
(C) means for searching for the target with reference to the search reference position;
(D) means for outputting information relating to the searched target,
(E) When traveling on an elevated road or a tunnel, an object search apparatus characterized in that an intersection ahead of the current position is determined as the search reference position .

Images